// Copyright 2021 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "gmock/gmock.h"
#include "src/program.h"

#if TINT_BUILD_SPV_READER
#include "src/reader/spirv/parser_impl_test_helper.h"
#endif

#if TINT_BUILD_WGSL_WRITER
#include "src/writer/wgsl/generator.h"
#endif

namespace {

void TintInternalCompilerErrorReporter(const tint::diag::List& diagnostics) {
  FAIL() << diagnostics.str();
}

struct Flags {
  bool spirv_reader_dump_converted = false;

  bool parse(int argc, char** argv) {
    bool errored = false;
    for (int i = 1; i < argc && !errored; i++) {
      auto match = [&](std::string name) { return name == argv[i]; };

      if (match("--dump-spirv")) {
        spirv_reader_dump_converted = true;
      } else {
        std::cout << "Unknown flag '" << argv[i] << "'" << std::endl;
        return false;
      }
    }
    return true;
  }
};

}  // namespace

// Entry point for tint unit tests
int main(int argc, char** argv) {
  testing::InitGoogleMock(&argc, argv);

#if TINT_BUILD_WGSL_WRITER
  tint::Program::printer = [](const tint::Program* program) {
    auto result = tint::writer::wgsl::Generate(program, {});
    if (!result.error.empty()) {
      return "error: " + result.error;
    }
    return result.wgsl;
  };
#endif  //  TINT_BUILD_WGSL_WRITER

  Flags flags;
  if (!flags.parse(argc, argv)) {
    return -1;
  }

#if TINT_BUILD_SPV_READER
  if (flags.spirv_reader_dump_converted) {
    tint::reader::spirv::test::DumpSuccessfullyConvertedSpirv();
  }
#endif  // TINT_BUILD_SPV_READER

  tint::SetInternalCompilerErrorReporter(&TintInternalCompilerErrorReporter);

  auto res = RUN_ALL_TESTS();

  return res;
}
